Had the Thunderbird up to 150 mph one time . Turned the curise control on at 130 . Dumbest thing I ever did. 17 years old at the time. The car had some awesome gearing for the 429 thunder jet motor.First car was a pos Plymouth Sundance (dodge shadow) wrecked it pretty quick so I could drive my 75 f250, 360 FE 4v. Light the tires off at will. It's been love ever since.